Maggots And Leeches: Good Medicine

  1. Maggots And Leeches: Good Medicine

    7/8/2004 12:27:09 PM

    Two medical devices recently approved by the Food and Drug Administration seem more likely to appear on Fear Factor than ER.

    Calling them "devices" is a stretch. But just like stimulators and stents, prostheses and pacemakers, leeches and maggots are now classified as FDA-approved medical devices-the first live animals to earn that distinction.

    No question, the thought of getting up close and personal with leeches or maggots is enough to make most healthy people feel ill. But patients who have been treated with these "devices," as well as their doctors, credit them with restoring health to tissue when high-tech medicine could not.

    Although a French firm's leeches were approved only last week and a California doctor's maggots were cleared in January, the creatures have long medical track records.

    Companies that were already selling leeches before the Food, Drug and Cosmetic Act became law in 1976 were grandfathered in and did not need FDA approval. The FDA only recently decided to regulate maggots, says internist Ronald Sherman, who earned the agency's permission in January to continue supplying the caterpillar-like fly larvae.

    Leeches through history

    Medicinal leeches are bloodsucking, aquatic cousins of the earthworm that hail from Europe. Doctors used leeches for bloodletting-thought to be good for whatever ailed patients-from Hippocrates' time through the mid-19th century. Leeches fell out of favor when doctors finally recognized that patients they bled fared no better, and often worse, than other patients.

    It's often trickier to connect veins, which carry blood back to the heart, than arteries, which carry blood from the heart. So before grafted tissue gets new vein growth, it can become congested with blood. Sometimes surgery can fix the problem, but if it can't, the graft might fail.

    Enter the leech. Not only does it suck out excess blood, but its saliva contains a powerful blood thinner. So even after it fills up and drops off, bleeding continues.

    Douglas Chepeha, an ear, nose and throat surgeon at the University of Michigan, treats two or three patients a year with leeches after rebuilding faces or mouths decimated by cancer.

    Typically, leeches are used one at a time and replaced as they drop off-usually every 20 minutes-for 24 to 48 hours, then intermittently for a few days afterward, Chepeha says.

    "I've never had anybody refuse," Chepeha says. "They've come in with a serious cancer, they've had part of a critical organ removed, they want to get better. You say to them: 'I think this could help.' People have been amazingly stoic about it."

    Normally pretty squeamish, Alyssa Kieff, 22, of Marrero, La., tolerated five days of leech therapy in April. Kieff's beagle had snapped at her and tore off her right upper eyelid, which was reattached microsurgically by Kamran Khoobehi, a Louisiana State University Health Sciences Center plastic surgeon.

    Kieff, who returned to her receptionist job a month after surgery, wasn't quite as enthusiastic. Still, she says, "I knew it had to be done to help the eyelid survive. I didn't think about it."

    Two U.S. companies sell medicinal leeches for about $7.50 apiece. They're usually on call in hospital pharmacy refrigerators.

    Compared with leeches, maggots are tiny things. But their association with rotting flesh may make them even more off-putting than leeches-until you talk to someone who's been treated with them.

    Maggots to the rescue

    Three years ago, a small cut on the bottom of Pam Mitchell's foot became seriously infected as a result of diabetes. After surgery to remove diseased tissue, Mitchell, who had worked as a waitress for 20 years, was left with a hole in her foot that was 1 inch deep and 2 inches across. And still, the infection raged. Antibiotics were powerless against it.

    "They were telling me I should think about amputation," says Mitchell, who is from Akron, Ohio.

    But then a co-worker told Mitchell of a TV show she had seen about using maggots to heal wounds. Desperate to save her foot, Mitchell found a dermatologist, Eliot Mostow, who thought maggot therapy was worth a try. Luckily, her insurance covered the $75-a-session treatments.

    Mostow applied disinfected maggots to her wound and covered them with a cagelike dressing. The maggots liquefied dead tissue, killed harmful bacteria and stimulated healing. After 48 hours, Mitchell's orthopedist removed the maggot dressing. After 10 treatments, her foot was well on its way to being healed. "It's amazing," she says. "There's hardly even a scar there."

    Today, Mitchell serves on the board of the non-profit Biotherapeutics Education and Research Foundation, which promotes the medical use of maggots and leeches and provides them to patients who lack insurance coverage. Sherman, an Irvine, Calif., internist, is the group's CEO and only U.S. maggot supplier.

    To say Sherman is mad about maggots is like saying Spider-Man 2 is doing OK at the box office. "He really is Dr. Maggot in my mind," Mostow says. "He knows more about this than anybody else."

    Through the years, Sherman says, military surgeons noticed that soldiers with maggot-infested wounds did better than similarly wounded soldiers without the infestation.

    Sherman began treating patients with maggots in 1990. By 1993, as word got out about his success in saving limbs scheduled for amputation, other hospitals began asking him for maggots. By 1994 or 1995, Sherman says, he was getting so many requests that he began charging a nominal fee to cover the materials and his time.

    Today, Sherman says, he supplies blow fly maggots to 300 sites around the country, including Washington Hospital Center in Washington, D.C., which used them to treat victims of the terrorist attack on the Pentagon. "They're lifesaving," says James Jeng, a burn specialist at the hospital.

    Sherman says relatively few of his customers are willing to go public. "Some administrators," he says, "have expressed the view that the public will think the hospital is old-fashioned or, worse, unhygienic."

    by USA Today
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  3. by   Farkinott
    I worked in an indigenous community where occasionally someone came in with a wound full of maggots. It used to freak out a lot of other nurses but not me. The wound was always nice and clean cos the maggots had debrided it so nicely. If it was a really manky wound a liberal application of hydrogen peroxide exterminates any unwanted wildlife. (Yes I know it's cytotoxic so please don't llecture me!)
  4. by   Dixielee
    I worked at a major teaching facility about 15 years ago and had a few patients who were treated with leeches. They were facial reconstruction patients after major cancer removal, lots of flaps. All of these patients were on ventilators, all with trachs. They were all sedated so they were unaware of the leeches. You had to stay at the bedside the entire time you were using them, because they would just fall off when they were full and you didn't want them dissapearing. You had to prick the skin with a needle to have a little bit of blood for the leech to bcome interested in. If you could not get the leech interested, they would tend to crawl around looking for blood, sometimes up the nose, around the trach etc. so you had to be vigilent! Once they were full and fell off we dropped them into distilled water where they exploded! It was a little unnerving but very interesting and they worked.
  5. by   suzanne4
    Leeches are wonderful in micro-surgery when you have re-attached fingers.
    We always had to send the "used" leeches to be incinerated as they were considered bio-hazardous after they were "full."
  6. by   Angela Mac
    Yes. Nature has a way of fixing itself.
    When I lived in SW Florida, I had a patient with gangrene, on maggot therapy. The maggots did a fantastic job, more so, than traditional medicine.
    I also watched a special on the Discovery channel, about cleaning fishes. Patients with psoriasis, and other skin conditions were brought to a man-made pool filled with cleaning fishes, who gently removed dead skin cells. I was fascinated.
    Enough so, that I am looking into homeopathic and natural remedies.
  7. by   elkpark
    The new FDA approval got mentioned on "The Daily Show" last week, and I was surprised because I knew hospitals have been using leeches and maggots for years ... I have worked in settings where both were used. They do a better job of what they do (clearing away pooled blood and debriding wounds) than anything we humans have invented to do the same job.